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| 集水系统指沟渠 | |||
| 集油气，水系统 | |||
| 集水系统; 收集系统 | |||
| 排水系统 | |||
| collecting system: 30 phrases in 11 subjects |
| Animal husbandry | 1 |
| Architecture | 1 |
| Aviation | 1 |
| Earth sciences | 1 |
| Ecology | 1 |
| Electronics | 3 |
| Metallurgy | 5 |
| Oil / petroleum | 2 |
| Space | 1 |
| Technology | 13 |
| Water resources | 1 |
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